lock

1[transitive,intransitive]lock (something)to fasten something with a lock; to be fastened with a lockDid you lock the door?The gates are locked at 6 o'clock.This suitcase doesn't lock.

2[transitive]lock something + adv./prep.to put something in a safe place and lock itShe locked her passport and money in the safe.

3[intransitive,transitive]lock (something) (in/into/around, etc. something)lock (something) (together)to become or make something become fixed in one position and unable to moveThe brakes locked and the car skidded.He locked his helmet into position with a click.

4[transitive]be locked in/into somethingto be involved in a difficult situation, an argument, a disagreement, etc.The two sides are locked into a bitter dispute.She felt locked in a loveless marriage.

5[transitive]be locked together/in somethingto be held very tightly by someoneThey were locked in a passionate embrace.

6[transitive]lock something(computing)to prevent computer data from being changed or looked at by someone without permissionThese files are locked to protect confidentiality.